The new intermediate long bursting source XTE J1701-407 (2009)
Falanga, M., Cumming, A., Bozzo, E., Chenevez, J.
XTE J1701-407 is a newly discovered X-ray transient source. In this work we investigate its flux variability and study the intermediate long and short bursts discovered by Swift on July 17, and 27,...
INTEGRAL monitoring of unusually long X-ray bursts (2008)
Chenevez, J., Falanga, M., Kuulkers, E., Brandt, S., Lund, N., Cumming, A.
X-ray bursts are thermonuclear explosions on the surface of accreting neutron stars in low mass X-ray binaries. As most of the known X-ray bursters are frequently observed by INTEGRAL, an...
Bozzo, E., Falanga, M., Stella, L.
In this paper we summarize some aspects of the wind accretion theory in high mass X-ray binaries hosting a magnetic neutron star and a supergiant companion. In particular, we concentrate on the...
IGRJ16479-4514: the first eclipsing supergiant fast X-ray transient? (2008)
Bozzo, E., Stella, L., Israel, G., Falanga, M., Campana, S.
Supergiant fast X-ray transients are a new class of high mass X-ray binaries recently discovered with INTEGRAL. Hours long outbursts from these sources have been observed on numerous occasions at...
Chaotic ray propagation in corrugated layers (2008)
Bottiglieri, M., De Martino, S., Falanga, M., Godano, C.
The aim of this paper is to study the effects of a corrugated wall on the behaviour of propagating rays. Different types of corrugation are considered, using different distributions of the...
De Lauro, E., De Martino, S., Falanga, M., Palo, M.
We analyze time series of Strombolian volcanic tremor, focusing our attention on the frequency band [0.1?0.5] Hz (very long period (VLP) tremor). Although this frequency band is largely affected by...
Characterization of Strombolian events by using independent component analysis (2008)
Ciaramella, A., De Lauro, E., De Martino, S., Di Lieto, B., Falanga, M., Tagliaferri, R.
We apply Independent Component Analysis (ICA) to seismic signals recorded at Stromboli volcano. Firstly, we show how ICA works considering synthetic signals, which are generated by dynamical systems....
Self-sustained oscillator as a model for explosion quakes at Stromboli Volcano (2008)
De Martino, S., Godano, C., Falanga, M.
We analyze seismic signals produced by explosion-quakes at Stromboli Volcano. We use standard nonlinear procedures to search a low-order effective dynam-ics. The dimension of the reconstructed phase...
Chaotic ray propagation in corrugated layers (2008)
Bottiglieri, M., De Martino, S., Falanga, M., Godano, C.
The aim of this paper is to study the effects of a corrugated wall on the behaviour of propagating rays. Different types of corrugation are considered, using different distributions of the...
De Lauro, E., De Martino, S., Falanga, M., Palo, M.
We analyze time series of Strombolian volcanic tremor, focusing our attention on the frequency band [0.1?0.5] Hz (very long period (VLP) tremor). Although this frequency band is largely affected by...
Characterization of Strombolian events by using independent component analysis (2008)
Ciaramella, A., De Lauro, E., De Martino, S., Di Lieto, B., Falanga, M., Tagliaferri, R.
We apply Independent Component Analysis (ICA) to seismic signals recorded at Stromboli volcano. Firstly, we show how ICA works considering synthetic signals, which are generated by dynamical systems....
Self-sustained oscillator as a model for explosion quakes at Stromboli Volcano (2008)
De Martino, S., Godano, C., Falanga, M.
We analyze seismic signals produced by explosion-quakes at Stromboli Volcano. We use standard nonlinear procedures to search a low-order effective dynam-ics. The dimension of the reconstructed phase...
Are There Magnetars in High Mass X-ray Binaries? The Case of SuperGiant Fast X-Ray Transients (2008)
Bozzo, E., Falanga, M., Stella, L.
In this paper we survey the theory of wind accretion in high mass X-ray binaries hosting a magnetic neutron star and a supergiant companion. We concentrate on the different types of interaction...
Influence of Compton scattering on the broad-band X-ray spectra of intermediate polars (2008)
Suleimanov, V., Poutanen, J., Falanga, M., Werner, K.
The majority of cataclysmic variables observed in the hard X-ray energy band are intermediate polars where the magnetic field is strong enough to channel the accreting matter to the magnetic poles of...
Modulated X-ray Emissivity near the Stress Edge in Sgr A* (2008)
Falanga, M., Melia, F., Prescher, M., Belanger, G., Goldwurm, A.
Sgr A* is thought to be the radiative manifestation of a ~3.6E6 Msun supermassive black hole at the Galactic center. Its mm/sub-mm spectrum and its flare emission at IR and X-ray wavelengths may be...
1RXSJ173021.5-055933: a cataclysmic variable with a fast-spinning magnetic white dwarf (2008)
De Martino, D., Matt, G., Mukai, K., Falanga, M., Gaensicke, B. T., ...
We present the first X-ray observations with the XMM-Newton and INTEGRAL satellites of the recently discovered cataclysmic variable 1RXSJ173021.5-055933, together with simultaneous UV and coordinated...
1RXS J173021.5-055933: a cataclysmic variable with a fast-spinning magnetic white dwarf (2008)
De Martino, D., Matt, G., Mukai, K., Falanga, M., Gänsicke, B. T., ...
Broad-band X-ray properties of magnetic cataclysmic variables (2008)
De Martino, D., Matt, G., Mukai, K., Falanga, M., Haberl, F., ...
GODANO, C.; Dipartimento Di Scienze Ambientali, Seconda Università Di Napoli, Caserta, Italia., PINGUE, F.; Istituto Nazionale Di Geofisica E Vulcanologia, Sezione OV, Napoli, Italia, BOTTIGLIERI, M.; Dipartimento Di Scienze Ambientali, Seconda Università Di Napoli, Caserta, Italia., FALANGA, M.; Dipartimento Di Fisica, Università Di Salerno, Baronissi (SA), Italia., TAMMARO, U.; Istituto Nazionale Di Geofisica E Vulcanologia, Sezione OV, Napoli, Italia, DE MARTINO, P.; Istituto Nazionale Di Geofisica E Vulcanologia, Sezione OV, Napoli, Italia, ...
Independent component analysis (ICA) is a recent and well-known technique used to separate mixtures of signals. This technique has been applied to the ground deformation time-series recorded at the...
Intermediate long X-ray bursts from the ultra-compact binary source SLX 1737-282 (2007)
Falanga, M., Chenevez, J., Cumming, A., Kuulkers, E., Trap, G., Goldwurm, A.
Aims: The low persistent X-ray burster source SLX 1737-282 is classified as an ultra-compact binary candidate. We compare the data on SLX 1737-282 with the other similar objects and attempt to derive...
X-Ray Eclipse Time Delays in 4U2129+47 (2007)
Bozzo, E., Falanga, M., Papitto, A., Stella, L., Perna, R., Lazzati, D., ...
4U 2129+47 was discovered in the early 80's and classified as an accretion disk corona source due to its broad and partial X-ray eclipses. The 5.24 hr binary orbital period was inferred from the...
General Relativistic Flux Modulations from Disk Instabilities in Sagittarius A* (2007)
Falanga, M., Melia, F., Tagger, M., Goldwurm, A., Belanger, G.
Near-IR and X-ray flares have been detected from the supermassive black hole Sgr A* at the center of our Galaxy with a (quasi)-period of ~17-20 minutes, suggesting an emission region only a few...
IGR J00234+6141 : a new INTEGRAL source identified as an Intermediate polar (2007)
Bonnet-Bidaud, J. M., De Martino, D., Falanga, M., Mouchet, M., Masetti, N.
Following an extensive survey of the galactic plane by the INTEGRAL satellite, new hard X-ray sources are discovered with a significant fraction of Cataclysmic Variables (CVs) among them. We report...
Falanga, M., Poutanen, J., Bonning, E. W., Kuiper, L., Bonnet-Bidaud, J. M., Goldwurm, A., ...
Aims: Hete J1900.1-2455 is the seventh known X-ray transient accreting millisecond pulsar and has been in outburst for more than one year. We compared the data on Hete J1900.1-2455 with other similar...
Falanga, M., Poutanen, J., Bonning, E. W., Kuiper, L., Bonnet-Bidaud, J. M., Goldwurm, A., ...
Aims: Hete J1900.1-2455 is the seventh known X-ray transient accreting millisecond pulsar and has been in outburst for more than one year. We compared the data on Hete J1900.1-2455 with other similar...
Falanga, M., Poutanen, J., Bonning, E. W., Kuiper, L., Bonnet-Bidaud, J. M., Goldwurm, A., ...
Aims: Hete J1900.1-2455 is the seventh known X-ray transient accreting millisecond pulsar and has been in outburst for more than one year. We compared the data on Hete J1900.1-2455 with other similar...
Churazov, E., Sunyaev, R., Revnivtsev, M., Sazonov, S., Molkov, S., Grebenev, S., ...
We study the spectrum of the cosmic X-ray background (CXB) in energy range $\sim$5-100 keV. Early in 2006 the INTEGRAL observatory performed a series of four 30ksec observations with the Earth disk...
IGR J00234+6141 : a new INTEGRAL source identified as an Intermediate polar (2007)
Bonnet-Bidaud, J. M., De Martino, D., Falanga, M., Mouchet, M., Masetti, N.
Following an extensive survey of the galactic plane by the INTEGRAL satellite, new hard X-ray sources are discovered with a significant fraction of Cataclysmic Variables (CVs) among them. We report...
Churazov, E., Sunyaev, R., Revnivtsev, M., Sazonov, S., Molkov, S., Grebenev, S., ...
We study the spectrum of the cosmic X-ray background (CXB) in energy range $\sim$5-100 keV. Early in 2006 the INTEGRAL observatory performed a series of four 30ksec observations with the Earth disk...
Churazov, E., Sunyaev, R., Revnivtsev, M., Sazonov, S., Molkov, S., Grebenev, S., ...
We study the spectrum of the cosmic X-ray background (CXB) in energy range $\sim$5-100 keV. Early in 2006 the INTEGRAL observatory performed a series of four 30ksec observations with the Earth disk...
IGR J17254-3257, a new bursting neutron star (2007)
Chenevez, J., Falanga, M., Kuulkers, E., Walter, R., Bildsten, L., Brandt, S., ...
The study of the observational properties of uncommonly long bursts from low luminosity sources with extended decay times up to several tens of minutes is important when investigating the transition...
IGR J17254-3257, a new bursting neutron star (2007)
Chenevez, J., Falanga, M., Kuulkers, E., Walter, R., Bildsten, L., Brandt, S., ...
The study of the observational properties of uncommonly long bursts from low luminosity sources with extended decay times up to several tens of minutes is important when investigating the transition...
Swift, RXTE, and INTEGRAL observation of Swift J1922.7-1716 (2007)
Falanga, M., Belloni, T., Campana, S.
We report the results of analyzing Swift, RossiXTE, and INTEGRAL data of Swift J1922.7-1716, a likely transient X-ray source discovered by Swift/BAT. Both the fast variability measured by the...
Two-phase X-ray burst from GX 3+1 observed by INTEGRAL (2007)
Chenevez, J., Falanga, M., Brandt, S., Farinelli, R., Frontera, F., Goldwurm, A., ...
We present an analysis of an anomalously long X-ray burst from the low-mass X-ray binary system GX~3+1 observed by INTEGRAL on August 31, 2004. The burst is characterized by two distinct phases: an...
We present a Comptonization model for the observed properties of the energy-dependent soft/hard time lags and pulsed fraction (amplitude) associated with the pulsed emission of a neutron star (NS)....
Accreting X-ray millisecond pulsars observed with INTEGRAL (2007)
I review the properties of three X-ray accreting millisecond pulsars observed with INTEGRAL. Out of seven recently discovered accretion-powered pulsars (one discovered by INTEGRAL), three were...
IGR J08408--4503: a new recurrent Supergiant Fast X-ray Transient (2007)
Gotz, D., Falanga, M., Senziani, F., De Luca, A., Schanne, S., Von Kienlin, A.
The supergiant fast X-ray transient IGR J08408-4503 was discovered by INTEGRAL on May 15, 2006, during a bright flare. The source shows sporadic recurrent short bright flares, reaching a peak...
On the maximum efficiency of the propeller mass-ejection mechanism (2007)
Falanga, M., Bozzo, E., Stella, L., Burderi, L., Di Salvo, T., Perna, R.
Aims. We derive simple estimates of the maximum efficiency with which matter can be ejected by the propeller mechanism in disk-fed, rotating magnetic neutron stars. Some binary evolution scenarios...
IGR J08408-4503: a new recurrent supergiant fast X-ray transient (2007)
Götz, D., Falanga, M., Senziani, F., De Luca, A., Schanne, S., Von Kienlin, A.
Independent component analysis as a tool for ground deformation analysis (2007)
Bottiglieri, M.; Dipartimento Di Scienze Ambientali, Seconda Università Di Napoli, Caserta, Italy, Falanga, M.; Dipartimento Di Fisica, Università Di Salerno, Baronissi (SA), Italy, Tammaro, U.; Istituto Nazionale Di Geofisica E Vulcanologia, Sezione OV, Napoli, Italia, Obrizzo, F.; Istituto Nazionale Di Geofisica E Vulcanologia, Sezione OV, Napoli, Italia, De Martino, P.; Istituto Nazionale Di Geofisica E Vulcanologia, Sezione OV, Napoli, Italia, Godano, C.; Dipartimento Di Scienze Ambientali, Seconda Università Di Napoli, Caserta, Italy, ...
Independent component analysis (ICA) is a recent and well-known technique used to separate mixtures of signals. This technique has been applied to the ground deformation time-series recorded at the...
Churazov, E., Sunyaev, R., Revnivtsev, M., Sazonov, S., Molkov, S., Grebenev, S., ...
12 pages, 12 figures.-- arXiv:0608250 astro-ph pre-print supplied.-- Final full-text version of the paper available at: http://dx.doi.org/10.1051/0004-6361:20066230.
IGR J08408--4503: a new recurrent Supergiant Fast X-ray Transient (2006)
Gotz, D., Falanga, M., Senziani, F., De Luca, A., Schanne, S., Von Kienlin, A.
The supergiant fast X-ray transient IGR J08408-4503 was discovered by INTEGRAL on May 15, 2006, during a bright flare. The source shows sporadic recurrent short bright flares, reaching a peak...
INTEGRAL Broadband X-ray spectrum of the intermediate polar V709 Cassiopeiae (2006)
We present the hard X-ray time-averaged spectrum of the intermediate polar V709 Cas observed with INTEGRAL. We performed the observation using data from the IBIS/ISGRI instrument in the 20-100 keV...
INTEGRAL and RXTE observations of accreting millisecond pulsar IGR J00291+5934 in outburst (2006)
Falanga, M., Kuiper, L., Poutanen, J., W. Bonning, E., Hermsen, W., Di Salvo, T., ...
Simultaneous observations of the accretion-powered millisecond pulsar IGR J00291+5934 by International Gamma-Ray Astrophysics Laboratory and Rossi X-ray Timing Explorer during the 2004 December...
INTEGRAL Broadband X-ray spectrum of the intermediate polar V709 Cassiopeiae (2006)
We present the hard X-ray time-averaged spectrum of the intermediate polar V709 Cas observed with INTEGRAL. We performed the observation using data from the IBIS/ISGRI instrument in the 20-100 keV...
INTEGRAL and RXTE observations of accreting millisecond pulsar IGR J00291+5934 in outburst (2006)
Falanga, M., Kuiper, L., Poutanen, J., W. Bonning, E., Hermsen, W., Di Salvo, T., ...
Simultaneous observations of the accretion-powered millisecond pulsar IGR J00291+5934 by International Gamma-Ray Astrophysics Laboratory and Rossi X-ray Timing Explorer during the 2004 December...
INTEGRAL Broadband X-ray spectrum of the intermediate polar V709 Cassiopeiae (2006)
We present the hard X-ray time-averaged spectrum of the intermediate polar V709 Cas observed with INTEGRAL. We performed the observation using data from the IBIS/ISGRI instrument in the 20-100 keV...
INTEGRAL and RXTE observations of accreting millisecond pulsar IGR J00291+5934 in outburst (2006)
Falanga, M., Kuiper, L., Poutanen, J., W. Bonning, E., Hermsen, W., Di Salvo, T., ...
Simultaneous observations of the accretion-powered millisecond pulsar IGR J00291+5934 by International Gamma-Ray Astrophysics Laboratory and Rossi X-ray Timing Explorer during the 2004 December...
The X-ray spectrum of the bursting atoll source 4U$\sim$1728-34 observed with INTEGRAL (2006)
Falanga, M., Gotz, D., Goldoni, P., Farinelli, R., Goldwurm, A., Mereghetti, S., ...
We present for the first time a study of the 3-200 keV broad band spectra of the bursting atoll source 4U 1728-34 (GX 354-0) along its hardness intensity diagram. The analysis was done using the...
A new symbiotic low mass X-ray binary system: 4U 1954+319 (2006)
Mattana, F., Gotz, D., Falanga, M., Senziani, F., De Luca, A., Esposito, P., ...
4U 1954+319 was discovered 25 years ago, but only recently has a clear picture of its nature begun to emerge. We present for the first time a broad-band spectrum of the source and a detailed timing...
Falanga, M., Poutanen, J., Bonning, E. W., Kuiper, L., Bonnet-Bidaud, J. M., Goldwurm, A., ...
Aims: Hete J1900.1-2455 is the seventh known X-ray transient accreting millisecond pulsar and has been in outburst for more than one year. We compared the data on Hete J1900.1-2455 with other similar...
Churazov, E., Sunyaev, R., Revnivtsev, M., Sazonov, S., Molkov, S., Grebenev, S., ...
We study the spectrum of the cosmic X-ray background (CXB) in energy range $\sim$5-100 keV. Early in 2006 the INTEGRAL observatory performed a series of four 30ksec observations with the Earth disk...
The X-ray spectrum of the bursting atoll source 4U~1728-34 observed with INTEGRAL (2006)
Falanga, M., Gotz, D., Goldoni, P., Farinelli, R., Goldwurm, A., Mereghetti, S., ...
We present for the first time a study of the 3-200 keV broad band spectra of the bursting atoll source 4U 1728-34 (GX 354-0) along its hardness intensity diagram. The analysis was done using the...
Swift, RXTE, and INTEGRAL observation of Swift J1922.7-1716 (2006)
Falanga, M., Belloni, T., Campana, S.
We report the results of analyzing Swift, RossiXTE, and INTEGRAL data of Swift J1922.7-1716, a likely transient X-ray source discovered by Swift/BAT. Both the fast variability measured by the...
The X-ray spectrum of the bursting atoll source 4U$\sim$1728-34 observed with INTEGRAL (2006)
Falanga, M., Gotz, D., Goldoni, P., Farinelli, R., Goldwurm, A., Mereghetti, S., ...
We present for the first time a study of the 3-200 keV broad band spectra of the bursting atoll source 4U 1728-34 (GX 354-0) along its hardness intensity diagram. The analysis was done using the...
E. De Lauro, S. De Martino, M. Falanga, M. Palo
We analyze time series of Strombolian volcanic tremor, focusing our attention on the frequency band [0.1–0.5] Hz (very long period (VLP) tremor). Although this frequency band is largely...
The broad-band spectrum of Cyg X-2 with INTEGRAL (Research note) (2006)
Lavagetto, G., Salvo, T. Di, Falanga, M., Iaria, R., Robba, N.R., Burderi, L., ...
The broad-band spectrum of Cyg X-2 with INTEGRAL (Research note) (2006)
Lavagetto, G., Salvo, T. Di, Falanga, M., Iaria, R., Robba, N.R., Burderi, L., ...
The broad-band spectrum of Cyg X-2 with INTEGRAL (2006)
Lavagetto, G., Salvo, T. Di, Falanga, M., Iaria, R., Robba, N.R., Burderi, L., ...
We study the broad band (3-100 keV) spectrum of Cygnus X-2 with INTEGRAL. We find that the spectrum is well fitted by a Comptonized component with a seed-photons temperature of ~ 1 keV, an electron...
The broad-band spectrum of Cyg X-2 with INTEGRAL (2005)
Lavagetto, G., Di Salvo, T., Falanga, M., Iaria, R., Robba, N. R., Burderi, L., ...
We study the broad band (3-100 keV) spectrum of Cygnus X-2 with INTEGRAL. We find that the spectrum is well fitted by a Comptonized component with a seed-photons temperature of ~1 keV, an electron...
Detection of hard X-ray emission from the Galactic nuclear region with INTEGRAL (2005)
Belanger, G., Goldwurm, A., Goldoni, P., Paul, J., Terrier, R., Falanga, M., ...
This letter presents the first results of an observational campaign to study the Galactic Centre with INTEGRAL. The mosaicked images obtained with the IBIS/ISGRI coded aperture instrument in the...
INTEGRAL Broadband X-ray spectrum of the intermediate polar V709 Cas (2005)
Falanga, M., Bonnet-Bidaud, J. M., Suleimanov, V.
We present the hard X-ray time-averaged spectrum of the intermediate polar V709 Cas observed with INTEGRAL. We performed the observation using data from the IBIS/ISGRI instrument in the 20-100 keV...